IAndroidBufferQueue.c revision e9236d046fdb5cac0696c42e03443a2439188146
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17/* AndroidBufferQueue implementation */ 18 19#include "sles_allinclusive.h" 20 21 22/** 23 * Determine the state of the audio player or audio recorder associated with a buffer queue. 24 * Note that PLAYSTATE and RECORDSTATE values are equivalent (where PLAYING == RECORDING). 25 */ 26 27static SLuint32 getAssociatedState(IAndroidBufferQueue *thiz) 28{ 29 SLuint32 state; 30 switch (InterfaceToObjectID(thiz)) { 31 case XA_OBJECTID_MEDIAPLAYER: 32 state = ((CMediaPlayer *) thiz->mThis)->mPlay.mState; 33 break; 34 case SL_OBJECTID_AUDIOPLAYER: 35 state = ((CAudioPlayer *) thiz->mThis)->mPlay.mState; 36 break; 37 case SL_OBJECTID_AUDIORECORDER: 38 state = ((CAudioRecorder *) thiz->mThis)->mRecord.mState; 39 break; 40 default: 41 // unreachable, but just in case we will assume it is stopped 42 assert(SL_BOOLEAN_FALSE); 43 state = SL_PLAYSTATE_STOPPED; 44 break; 45 } 46 return state; 47} 48 49 50/** 51 * parse and set the items associated with the given buffer, based on the buffer type, 52 * which determines the set of authorized items and format 53 */ 54static void setItems(const SLAndroidBufferItem *pItems, SLuint32 itemsLength, 55 SLuint16 bufferType, AdvancedBufferHeader *pBuff) 56{ 57 if ((NULL == pItems) || (0 == itemsLength)) { 58 // no item data, reset item structure based on type 59 switch (bufferType) { 60 case kAndroidBufferTypeMpeg2Ts: 61 pBuff->mItems.mTsCmdData.mTsCmdCode = ANDROID_MP2TSEVENT_NONE; 62 pBuff->mItems.mTsCmdData.mPts = 0; 63 break; 64 case kAndroidBufferTypeInvalid: 65 default: 66 return; 67 } 68 } else { 69 // parse item data based on type 70 switch (bufferType) { 71 72 case kAndroidBufferTypeMpeg2Ts: { 73 SLuint32 index = 0; 74 // supported Mpeg2Ts commands are mutually exclusive 75 if (SL_ANDROID_ITEMKEY_EOS == pItems->itemKey) { 76 pBuff->mItems.mTsCmdData.mTsCmdCode |= ANDROID_MP2TSEVENT_EOS; 77 //SL_LOGD("Found EOS event=%ld", pBuff->mItems.mTsCmdData.mTsCmdCode); 78 } else if (SL_ANDROID_ITEMKEY_DISCONTINUITY == pItems->itemKey) { 79 if (pItems->itemSize == 0) { 80 pBuff->mItems.mTsCmdData.mTsCmdCode |= ANDROID_MP2TSEVENT_DISCONTINUITY; 81 //SL_LOGD("Found DISCONTINUITYevent=%ld", pBuff->mItems.mTsCmdData.mTsCmdCode); 82 } else if (pItems->itemSize == sizeof(SLAuint64)) { 83 pBuff->mItems.mTsCmdData.mTsCmdCode |= ANDROID_MP2TSEVENT_DISCON_NEWPTS; 84 pBuff->mItems.mTsCmdData.mPts = *((SLAuint64*)pItems->itemData); 85 //SL_LOGD("Found PTS=%lld", pBuff->mItems.mTsCmdData.mPts); 86 } else { 87 SL_LOGE("Invalid size for MPEG-2 PTS, ignoring value"); 88 pBuff->mItems.mTsCmdData.mTsCmdCode |= ANDROID_MP2TSEVENT_DISCONTINUITY; 89 } 90 } else { 91 pBuff->mItems.mTsCmdData.mTsCmdCode = ANDROID_MP2TSEVENT_NONE; 92 } 93 break; 94 } 95 96 default: 97 return; 98 } 99 } 100} 101 102 103static SLresult IAndroidBufferQueue_RegisterCallback(SLAndroidBufferQueueItf self, 104 slAndroidBufferQueueCallback callback, void *pContext) 105{ 106 SL_ENTER_INTERFACE 107 108 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 109 110 interface_lock_exclusive(thiz); 111 112 // verify pre-condition that media object is in the SL_PLAYSTATE_STOPPED state 113 if (SL_PLAYSTATE_STOPPED == getAssociatedState(thiz)) { 114 thiz->mCallback = callback; 115 thiz->mContext = pContext; 116 117 switch (InterfaceToObjectID(thiz)) { 118 case SL_OBJECTID_AUDIOPLAYER: 119 result = SL_RESULT_SUCCESS; 120 android_audioPlayer_androidBufferQueue_registerCallback_l((CAudioPlayer*) thiz->mThis); 121 break; 122 case XA_OBJECTID_MEDIAPLAYER: 123 SL_LOGI("IAndroidBufferQueue_RegisterCallback()"); 124 result = SL_RESULT_SUCCESS; 125 android_Player_androidBufferQueue_registerCallback_l((CMediaPlayer*) thiz->mThis); 126 break; 127 default: 128 result = SL_RESULT_PARAMETER_INVALID; 129 } 130 131 } else { 132 result = SL_RESULT_PRECONDITIONS_VIOLATED; 133 } 134 135 interface_unlock_exclusive(thiz); 136 137 SL_LEAVE_INTERFACE 138} 139 140 141static SLresult IAndroidBufferQueue_Clear(SLAndroidBufferQueueItf self) 142{ 143 SL_ENTER_INTERFACE 144 result = SL_RESULT_SUCCESS; 145 146 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 147 148 interface_lock_exclusive(thiz); 149 150 // reset the queue pointers 151 thiz->mFront = &thiz->mBufferArray[0]; 152 thiz->mRear = &thiz->mBufferArray[0]; 153 // reset the queue state 154 thiz->mState.count = 0; 155 thiz->mState.index = 0; 156 // reset the individual buffers 157 for (XAuint16 i=0 ; i<(thiz->mNumBuffers + 1) ; i++) { 158 thiz->mBufferArray[i].mDataBuffer = NULL; 159 thiz->mBufferArray[i].mDataSize = 0; 160 thiz->mBufferArray[i].mDataSizeConsumed = 0; 161 thiz->mBufferArray[i].mBufferContext = NULL; 162 thiz->mBufferArray[i].mBufferState = SL_ANDROIDBUFFERQUEUEEVENT_NONE; 163 switch (thiz->mBufferType) { 164 case kAndroidBufferTypeMpeg2Ts: 165 thiz->mBufferArray[i].mItems.mTsCmdData.mTsCmdCode = ANDROID_MP2TSEVENT_NONE; 166 thiz->mBufferArray[i].mItems.mTsCmdData.mPts = 0; 167 break; 168 default: 169 result = SL_RESULT_CONTENT_UNSUPPORTED; 170 } 171 } 172 173 if (SL_RESULT_SUCCESS == result) { 174 // object-specific behavior for a clear 175 switch (InterfaceToObjectID(thiz)) { 176 case SL_OBJECTID_AUDIOPLAYER: 177 result = SL_RESULT_SUCCESS; 178 android_audioPlayer_androidBufferQueue_clear_l((CAudioPlayer*) thiz->mThis); 179 break; 180 case XA_OBJECTID_MEDIAPLAYER: 181 result = SL_RESULT_SUCCESS; 182 android_Player_androidBufferQueue_clear_l((CMediaPlayer*) thiz->mThis); 183 break; 184 default: 185 result = SL_RESULT_PARAMETER_INVALID; 186 } 187 } 188 189 interface_unlock_exclusive(thiz); 190 191 SL_LEAVE_INTERFACE 192} 193 194 195static SLresult IAndroidBufferQueue_Enqueue(SLAndroidBufferQueueItf self, 196 void *pBufferContext, 197 void *pData, 198 SLuint32 dataLength, 199 const SLAndroidBufferItem *pItems, 200 SLuint32 itemsLength) 201{ 202 SL_ENTER_INTERFACE 203 204 if ( ((NULL == pData) || (0 == dataLength)) 205 && ((NULL == pItems) || (0 == itemsLength))) { 206 // no data and no msg 207 SL_LOGE("Enqueue failure: trying to enqueue buffer with no data and no items."); 208 result = SL_RESULT_PARAMETER_INVALID; 209 } else { 210 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 211 212 // buffer size check, can be done outside of lock because buffer type can't change 213 switch (thiz->mBufferType) { 214 case kAndroidBufferTypeMpeg2Ts: 215 if (dataLength % MPEG2_TS_BLOCK_SIZE == 0) { 216 break; 217 } 218 // intended fall-through if test failed 219 SL_LOGE("Error enqueueing MPEG-2 TS data: size must be a multiple of %d (block size)", 220 MPEG2_TS_BLOCK_SIZE); 221 case kAndroidBufferTypeInvalid: 222 default: 223 result = SL_RESULT_PARAMETER_INVALID; 224 SL_LEAVE_INTERFACE 225 } 226 227 interface_lock_exclusive(thiz); 228 229 AdvancedBufferHeader *oldRear = thiz->mRear, *newRear; 230 if ((newRear = oldRear + 1) == &thiz->mBufferArray[thiz->mNumBuffers + 1]) { 231 newRear = thiz->mBufferArray; 232 } 233 if (newRear == thiz->mFront) { 234 result = SL_RESULT_BUFFER_INSUFFICIENT; 235 } else { 236 oldRear->mDataBuffer = pData; 237 oldRear->mDataSize = dataLength; 238 oldRear->mDataSizeConsumed = 0; 239 oldRear->mBufferContext = pBufferContext; 240 oldRear->mBufferState = SL_ANDROIDBUFFERQUEUEEVENT_NONE; 241 thiz->mRear = newRear; 242 ++thiz->mState.count; 243 setItems(pItems, itemsLength, thiz->mBufferType, oldRear); 244 result = SL_RESULT_SUCCESS; 245 } 246 // set enqueue attribute if state is PLAYING and the first buffer is enqueued 247 interface_unlock_exclusive_attributes(thiz, ((SL_RESULT_SUCCESS == result) && 248 (1 == thiz->mState.count) && (SL_PLAYSTATE_PLAYING == getAssociatedState(thiz))) ? 249 ATTR_ABQ_ENQUEUE : ATTR_NONE); 250 } 251 252 SL_LEAVE_INTERFACE 253} 254 255 256static SLresult IAndroidBufferQueue_GetState(SLAndroidBufferQueueItf self, 257 SLAndroidBufferQueueState *pState) 258{ 259 SL_ENTER_INTERFACE 260 261 // Note that GetState while a Clear is pending is equivalent to GetState before the Clear 262 263 if (NULL == pState) { 264 result = SL_RESULT_PARAMETER_INVALID; 265 } else { 266 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 267 268 interface_lock_shared(thiz); 269 270 pState->count = thiz->mState.count; 271 pState->index = thiz->mState.index; 272 273 interface_unlock_shared(thiz); 274 275 result = SL_RESULT_SUCCESS; 276 } 277 278 SL_LEAVE_INTERFACE 279} 280 281 282static SLresult IAndroidBufferQueue_SetCallbackEventsMask(SLAndroidBufferQueueItf self, 283 SLuint32 eventFlags) 284{ 285 SL_ENTER_INTERFACE 286 287 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 288 interface_lock_exclusive(thiz); 289 // FIXME only supporting SL_ANDROIDBUFFERQUEUEEVENT_PROCESSED in this implementation 290 if ((SL_ANDROIDBUFFERQUEUEEVENT_PROCESSED == eventFlags) || 291 (SL_ANDROIDBUFFERQUEUEEVENT_NONE == eventFlags)) { 292 thiz->mCallbackEventsMask = eventFlags; 293 result = SL_RESULT_SUCCESS; 294 } else { 295 result = SL_RESULT_FEATURE_UNSUPPORTED; 296 } 297 interface_unlock_exclusive(thiz); 298 299 SL_LEAVE_INTERFACE 300} 301 302 303static SLresult IAndroidBufferQueue_GetCallbackEventsMask(SLAndroidBufferQueueItf self, 304 SLuint32 *pEventFlags) 305{ 306 SL_ENTER_INTERFACE 307 308 if (NULL == pEventFlags) { 309 result = SL_RESULT_PARAMETER_INVALID; 310 } else { 311 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 312 interface_lock_peek(thiz); 313 SLuint32 callbackEventsMask = thiz->mCallbackEventsMask; 314 interface_unlock_peek(thiz); 315 *pEventFlags = callbackEventsMask; 316 result = SL_RESULT_SUCCESS; 317 } 318 319 SL_LEAVE_INTERFACE 320} 321 322 323static const struct SLAndroidBufferQueueItf_ IAndroidBufferQueue_Itf = { 324 IAndroidBufferQueue_RegisterCallback, 325 IAndroidBufferQueue_Clear, 326 IAndroidBufferQueue_Enqueue, 327 IAndroidBufferQueue_GetState, 328 IAndroidBufferQueue_SetCallbackEventsMask, 329 IAndroidBufferQueue_GetCallbackEventsMask 330}; 331 332 333void IAndroidBufferQueue_init(void *self) 334{ 335 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 336 thiz->mItf = &IAndroidBufferQueue_Itf; 337 338 thiz->mState.count = 0; 339 thiz->mState.index = 0; 340 341 thiz->mCallback = NULL; 342 thiz->mContext = NULL; 343 thiz->mCallbackEventsMask = SL_ANDROIDBUFFERQUEUEEVENT_PROCESSED; 344 345 thiz->mBufferType = kAndroidBufferTypeInvalid; 346 thiz->mBufferArray = NULL; 347 thiz->mFront = NULL; 348 thiz->mRear = NULL; 349} 350 351 352void IAndroidBufferQueue_deinit(void *self) 353{ 354 IAndroidBufferQueue *thiz = (IAndroidBufferQueue *) self; 355 if (NULL != thiz->mBufferArray) { 356 free(thiz->mBufferArray); 357 thiz->mBufferArray = NULL; 358 } 359} 360